[INFO] fetching crate konig 0.1.5...
[INFO] testing konig-0.1.5 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate konig 0.1.5 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate konig 0.1.5
[INFO] finished tweaking crates.io crate konig 0.1.5
[INFO] tweaked toml for crates.io crate konig 0.1.5 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate konig 0.1.5 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding nom v7.1.3 (available: v8.0.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f32750705290e091fcf0f97aba6cccd5265bd13d96d4a8263450515c7c4b434
[INFO] running `Command { std: "docker" "start" "-a" "8f32750705290e091fcf0f97aba6cccd5265bd13d96d4a8263450515c7c4b434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f32750705290e091fcf0f97aba6cccd5265bd13d96d4a8263450515c7c4b434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f32750705290e091fcf0f97aba6cccd5265bd13d96d4a8263450515c7c4b434", kill_on_drop: false }`
[INFO] [stdout] 8f32750705290e091fcf0f97aba6cccd5265bd13d96d4a8263450515c7c4b434
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0a109097cd2f4c3756ea62a4ee5124ffd2376300cd16ee43f0e33bec51c5232
[INFO] running `Command { std: "docker" "start" "-a" "f0a109097cd2f4c3756ea62a4ee5124ffd2376300cd16ee43f0e33bec51c5232", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling konig v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(associated_type_bounds)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `associated_type_bounds` has been stable since `1.79.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(impl_trait_in_assoc_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(slice_flatten)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `associated_type_bounds` has been stable since 1.79.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(associated_type_bounds)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_flatten` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(slice_flatten)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `flatten` found for struct `Vec<[Option<standard::piece::Piece>; 8]>` in the current scope
[INFO] [stdout]    --> src/io/fen.rs:304:19
[INFO] [stdout]     |
[INFO] [stdout] 304 |             files.flatten().try_into().unwrap()
[INFO] [stdout]     |                   ^^^^^^^ `Vec<[Option<standard::piece::Piece>; 8]>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]     |
[INFO] [stdout] 304 |             files.into_iter().flatten().try_into().unwrap()
[INFO] [stdout]     |                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate`
[INFO] [stdout]    --> src/standard/board.rs:107:24
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn validate(&self, candidate: Self::Move) -> Result<Self::LegalMove, Self::ValidationError> {
[INFO] [stdout]     |                        ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate`
[INFO] [stdout]    --> src/standard/board.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 113 |         candidate: crate::io::San,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `candidate`
[INFO] [stdout]    --> src/standard/board.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn process(&self, candidate: Self::LegalMove) -> Self {
[INFO] [stdout]     |                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_candidate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kind`
[INFO] [stdout]   --> src/standard/square.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn distance(kind: Self::PieceKind, a: Self, b: Self) -> Self::PieceMetricTarget
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/standard/square.rs:28:40
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn distance(kind: Self::PieceKind, a: Self, b: Self) -> Self::PieceMetricTarget
[INFO] [stdout]    |                                        ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/standard/square.rs:28:49
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn distance(kind: Self::PieceKind, a: Self, b: Self) -> Self::PieceMetricTarget
[INFO] [stdout]    |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `konig` (lib) due to 4 previous errors; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f0a109097cd2f4c3756ea62a4ee5124ffd2376300cd16ee43f0e33bec51c5232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a109097cd2f4c3756ea62a4ee5124ffd2376300cd16ee43f0e33bec51c5232", kill_on_drop: false }`
[INFO] [stdout] f0a109097cd2f4c3756ea62a4ee5124ffd2376300cd16ee43f0e33bec51c5232
